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1. A, n. View full entry 1551
...Logic. Esp. in syllogistic logic: (used to denote) a universal affirmative, i.e. a proposition of the form ‘All X are Y’....
2. A, n. View full entry 1569
...Chiefly Logic and Law. A hypothetical person, thing, or example, usually the first of two or more....
3. abduction, n. View full entry 1656
...Logic. A syllogism of which the major premise is certain and the minor only probable, so that the conclusion has only the probability of the minor. Cf. apagoge Now...
4. absolute, adj. (and adv.) and n. View full entry 1599
...orig. Logic and Philos. Of a term, or the concept to which it refers: not involving or implying relation; not dependent for meaning or significance on a relationship...
5. absolute, adj. (and adv.) and n. View full entry 1588
...Logic. Of a proposition, etc.: not dependent or conditional on any other proposition, etc.; axiomatic....
6. absolute, adj. (and adv.) and n. View full entry 1599
...orig. Logic and Philos. A term or concept which is not dependent for meaning or significance on a relationship with another term or concept. Cf. sense A....
7. absolutely, adv. and int. View full entry c1450
...In a manner detached from other things; without reference to, consideration of, or dependence upon anything external, circumstantial, or accidental....
8. accident, n. View full entry 1395
...Philos. In Aristotelian thought: a property or quality not essential to a substance or object; something that does not constitute an essential component, an attribute. Cf. substance4a....
9. accidental, adj., n., and adv. View full entry a1398
...Philos. In Aristotelian thought: relating to or denoting properties which are not essential to something's nature (see accident1a); non-essential....
10. † accidentary, adj. View full entry ?1549
...Having the nature of a logical accident; not affecting the essence, non-essential. Cf. accidental12....
11. additive, adj. and n. View full entry 1987
...Logic. A connective symbol between two logical propositions that is analogous to numerical addition in that multiplicative connective symbols are distributive over it. Cf. multiplicative2....
12. adequate, adj. View full entry 1615
...Philos. and Logic. Of an idea, concept, etc.: fully and exactly representing its object....
13. adequately, adv. View full entry 1628
...Philos. With perfect or exact correspondence of idea to object. Cf. adequation2. Obs....
14. ad hominem, adv. and adj. View full entry 1588
...By attempting to disprove an argument or proposition by attacking the beliefs or character of the person proposing it (cf. argumentum ad hominemargument3c). Subsequently also in extended use:...
15. ad hominem, adv. and adj. View full entry 1783
...Relating to or directed at a particular person; (also) directed against the individual concerned rather than the relevant issue; personal....
16. -adic, suffix View full entry 1906
...Chiefly Math. and Logic. With preceding symbol (usu. n), forming adjectives designating a function, operator, relation, etc., having the number of arguments represented by the given...
17. adjunct, adj. and n. View full entry 1581
...Logic. Something added to the essence of a thing; an accompanying quality, property, or circumstance; a non-essential attribute....
18. adjunction, n. View full entry 1932
...Logic. A complex proposition (typically of the form ‘p and q’) which is true only when the component propositions are all true; an operation resulting in such...
19. affirm, v. View full entry 1551
...trans.Logic. To state that (a proposition, or part of a proposition) is true; to give as an affirmative proposition. Also intr. Cf. affirmative3....
20. affirmant, n. and adj. View full entry 1574
...Chiefly Law and Logic. That affirms something. Now rare....
